JP4928098B2 - 強誘電体キャパシタの製造方法 - Google Patents
強誘電体キャパシタの製造方法 Download PDFInfo
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- JP4928098B2 JP4928098B2 JP2005225482A JP2005225482A JP4928098B2 JP 4928098 B2 JP4928098 B2 JP 4928098B2 JP 2005225482 A JP2005225482 A JP 2005225482A JP 2005225482 A JP2005225482 A JP 2005225482A JP 4928098 B2 JP4928098 B2 JP 4928098B2
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- 238000000034 method Methods 0.000 title claims description 28
- 239000003990 capacitor Substances 0.000 title description 48
- 238000004519 manufacturing process Methods 0.000 title description 17
- 230000004888 barrier function Effects 0.000 claims description 137
- 239000010936 titanium Substances 0.000 claims description 37
- 229910052719 titanium Inorganic materials 0.000 claims description 31
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 29
- 229910052782 aluminium Inorganic materials 0.000 claims description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 16
- 150000004767 nitrides Chemical class 0.000 claims description 15
- 238000000137 annealing Methods 0.000 claims description 10
- 238000005121 nitriding Methods 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000004544 sputter deposition Methods 0.000 claims description 8
- 239000012298 atmosphere Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 169
- 239000013078 crystal Substances 0.000 description 69
- 229910010038 TiAl Inorganic materials 0.000 description 10
- 229910052721 tungsten Inorganic materials 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 8
- 239000010937 tungsten Substances 0.000 description 8
- 238000002441 X-ray diffraction Methods 0.000 description 6
- 239000000470 constituent Substances 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 229910052726 zirconium Inorganic materials 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 229910052741 iridium Inorganic materials 0.000 description 5
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 5
- 230000010287 polarization Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229910052715 tantalum Inorganic materials 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000009832 plasma treatment Methods 0.000 description 2
- 238000005546 reactive sputtering Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910000457 iridium oxide Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D1/00—Resistors, capacitors or inductors
- H10D1/60—Capacitors
- H10D1/68—Capacitors having no potential barriers
- H10D1/692—Electrodes
- H10D1/696—Electrodes comprising multiple layers, e.g. comprising a barrier layer and a metal layer
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D1/00—Resistors, capacitors or inductors
- H10D1/60—Capacitors
- H10D1/68—Capacitors having no potential barriers
- H10D1/692—Electrodes
- H10D1/694—Electrodes comprising noble metals or noble metal oxides
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- Semiconductor Memories (AREA)
Description
図1は、本発明の一実施の形態の強誘電体メモリ装置100を模式的に示す断面図である。図1に示すように、強誘電体メモリ装置100は、強誘電体キャパシタ30と、プラグ20と、強誘電体キャパシタ30のスイッチングトランジスタ18とを含む。なお、本実施形態においては、1T/1C型のメモリセルについて説明するが、本発明が適用されるのは1T/1C型のメモリセルに限定されない。
次に、図1に示す強誘電体メモリ装置100の製造方法について、図面を参照して説明する。図2(a)〜(f)はそれぞれ、図1に示される強誘電体メモリ装置100に含まれる強誘電体キャパシタ30の一製造工程を模式的に示す断面図である。なお、図2(a)〜(f)においては、図1の強誘電体メモリ装置100のうち、絶縁層26およびプラグ20近傍のみを示している。
以下、実施例に基づいて本発明をさらに具体的に説明するが、本発明はこれらの実施例に限定されるものではない。
本実施例においては、図1,図2(a)および図2(b)に示す工程にしたがって、トランジスタ18、絶縁層26、およびプラグ20を形成したうえで、プラグ20上に第2バリア層12aを成膜した。
本実施例においては、図2(c)に示す工程にしたがって、実施例1で得られた第1バリア層14aに対して、窒素雰囲気下でアニールすることにより、TiAlNからなる第2バリア層12aを成膜した。ここで、窒素雰囲気下でのアニールは、窒素雰囲気下、650℃にて2分間ランプアニールすることにより行なった。
Claims (2)
- (a)チタンおよびアルミニウムからなる第1バリア層を、スパッタリング法により形成する工程と、
(b)窒素を含む雰囲気中で前記第1バリア層の融点未満にて前記第1バリア層をアニールすることにより、前記第1バリア層を窒化して、チタンおよびアルミニウムの窒化物からなる第2バリア層を形成する工程と、
(c)前記第2バリア層の上方に第1電極を形成する工程と、
(d)前記第1電極の上に強誘電体膜を形成する工程と、
(e)前記強誘電体膜の上に第2電極を形成する工程と、
を含み、
前記第1バリア層におけるチタンとアルミニウムの割合がそれぞれ、チタン70〜90原子%、アルミニウム30〜10原子%であり、
前記(a)において、前記第1バリア層を成膜する際の基板温度は、100〜300℃であり、
前記(b)において、前記アニールを350〜650℃で行ない、
前記(a)において、前記第1バリア層をプラグ上に形成する、強誘電体キャパシタの製造方法。 - 請求項1において、
前記(a)の前に、(f)アンモニアガスのプラズマを励起して、前記第1バリア層が形成される層の表面に、該プラズマを照射する工程をさらに含む、強誘電体キャパシタの製造方法。
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JP2005225482A JP4928098B2 (ja) | 2005-08-03 | 2005-08-03 | 強誘電体キャパシタの製造方法 |
US11/459,742 US7547629B2 (en) | 2005-08-03 | 2006-07-25 | Ferroelectric capacitor and its manufacturing method and ferroelectric memory device |
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JP2005225482A JP4928098B2 (ja) | 2005-08-03 | 2005-08-03 | 強誘電体キャパシタの製造方法 |
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Publication Number | Publication Date |
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JP2007042871A JP2007042871A (ja) | 2007-02-15 |
JP4928098B2 true JP4928098B2 (ja) | 2012-05-09 |
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JP2005225482A Expired - Fee Related JP4928098B2 (ja) | 2005-08-03 | 2005-08-03 | 強誘電体キャパシタの製造方法 |
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US (1) | US7547629B2 (ja) |
JP (1) | JP4928098B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007081378A (ja) * | 2005-08-17 | 2007-03-29 | Fujitsu Ltd | 半導体装置とその製造方法、および薄膜装置 |
JP2009302333A (ja) * | 2008-06-13 | 2009-12-24 | Seiko Epson Corp | 強誘電体メモリ装置の製造方法 |
US20110266529A1 (en) | 2010-04-27 | 2011-11-03 | The Trustees Of Princeton University | Remote doping of organic thin film transistors |
JP6129826B2 (ja) | 2011-06-14 | 2017-05-17 | ジョージア テック リサーチ コーポレイション | ビス−金属サンドイッチ化合物による有機半導体のn−ドーピング |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5886724A (ja) * | 1981-11-18 | 1983-05-24 | Nec Corp | 電極および配線の製造方法 |
JP3474352B2 (ja) * | 1996-03-18 | 2003-12-08 | 株式会社東芝 | 薄膜キャパシタ及び半導体装置 |
JPH1056140A (ja) | 1996-08-08 | 1998-02-24 | Sharp Corp | 強誘電体メモリ素子及びその製造方法 |
JPH10214944A (ja) * | 1997-01-31 | 1998-08-11 | Sharp Corp | 半導体装置の製造方法 |
KR100324316B1 (ko) * | 1999-03-26 | 2002-02-16 | 김영환 | 반도체 소자의 커패시터 및 그 제조방법 |
JP4143281B2 (ja) * | 2001-07-03 | 2008-09-03 | 本田技研工業株式会社 | 多元系セラミックス粉末または焼結体の製造方法 |
JP3961399B2 (ja) * | 2002-10-30 | 2007-08-22 | 富士通株式会社 | 半導体装置の製造方法 |
JP2004186517A (ja) * | 2002-12-05 | 2004-07-02 | Sony Corp | 強誘電体型不揮発性半導体メモリ及びその製造方法 |
US7180141B2 (en) * | 2004-12-03 | 2007-02-20 | Texas Instruments Incorporated | Ferroelectric capacitor with parallel resistance for ferroelectric memory |
US20070040198A1 (en) * | 2005-08-17 | 2007-02-22 | Fujitsu Limited | Semiconductor device and manufacturing method thereof, and thin film device |
-
2005
- 2005-08-03 JP JP2005225482A patent/JP4928098B2/ja not_active Expired - Fee Related
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2006
- 2006-07-25 US US11/459,742 patent/US7547629B2/en active Active
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Publication number | Publication date |
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JP2007042871A (ja) | 2007-02-15 |
US7547629B2 (en) | 2009-06-16 |
US20070029594A1 (en) | 2007-02-08 |
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